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Authors
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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (41571527)
Sichuan Center for Rural Development Research Project (01781912)
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Article History
Accepted: 22 December 2020
First Online: 11 January 2021
Compliance with Ethical Standards
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: The authors declare no conflict of interest.
: All participants in this study were provided with explanations via face-to-face interpretation as to the purpose and method of the investigation as well as possible risks and benefits of the study.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Written informed consent was given prior to the investigation and the research did not contain medical records.
